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-rw-r--r--firmware/export/pcm_playback.h65
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diff --git a/firmware/export/pcm_playback.h b/firmware/export/pcm_playback.h
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1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
9 *
10 * Copyright (C) 2005 by Linus Nielsen Feltzing
11 *
12 * All files in this archive are subject to the GNU General Public License.
13 * See the file COPYING in the source tree root for full license agreement.
14 *
15 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
16 * KIND, either express or implied.
17 *
18 ****************************************************************************/
19#ifndef PCM_PLAYBACK_H
20#define PCM_PLAYBACK_H
21
22#include <sys/types.h>
23
24/* Typedef for registered callback (play and record) */
25typedef void (*pcm_more_callback_type)(unsigned char **start,
26 size_t *size);
27typedef int (*pcm_more_callback_type2)(int status);
28
29void pcm_init(void);
30void pcm_postinit(void);
31
32/* set the pcm frequency - use values in hw_sampr_list
33 * use -1 for the default frequency
34 */
35void pcm_set_frequency(unsigned int frequency);
36/* apply settings to hardware immediately */
37void pcm_apply_settings(void);
38
39/* This is for playing "raw" PCM data */
40void pcm_play_data(pcm_more_callback_type get_more,
41 unsigned char* start, size_t size);
42
43void pcm_calculate_peaks(int *left, int *right);
44size_t pcm_get_bytes_waiting(void);
45
46void pcm_play_stop(void);
47void pcm_mute(bool mute);
48void pcm_play_pause(bool play);
49bool pcm_is_paused(void);
50bool pcm_is_playing(void);
51
52/** The following are for internal use between pcm_playback.c and target-
53 specific portion **/
54
55/* the registered callback function to ask for more mp3 data */
56extern volatile pcm_more_callback_type pcm_callback_for_more;
57extern volatile bool pcm_playing;
58extern volatile bool pcm_paused;
59
60extern void pcm_play_dma_start(const void *addr, size_t size);
61extern void pcm_play_dma_stop(void);
62extern void pcm_play_pause_pause(void);
63extern void pcm_play_pause_unpause(void);
64
65#endif /* PCM_PLAYBACK_H */